SIG SAUER MCX SPEAR-LT SBR 5.56 | 11.5″ | RMCX-556N-11B-IR-SBR

The SIG SAUER MCX Spear-LT SBR is a purpose-built short-barreled carbine offered in Flat Dark Earth with an 11.5-inch barrel and semi-automatic operation. The package includes a single 30-round removable magazine, an aluminum M-LOK handguard, and a folding aluminum stock for compact transport and storage. For a practical optic under $1,000 that complements this platform, consider a SIG Sauer ROMEO5 red-dot for fast target acquisition and reliable battery life. This configuration is well-suited to range training and short-range competition or tactical sport applications.

Product Specifications

• The manufacturer is Sig Sauer.
• The model is MCX SPEAR-LT (MCX SBR).
• The manufacturer part number is RMCX-556N-11B-IR-SBR.
• The caliber is .223 REM/5.56 NATO.
• The barrel measures 11.5 inches.
• The magazine capacity is 30 rounds.
• The action is Semi-Auto.
• The finish and color are Flat Dark Earth anodized.
• The stock is a folding aluminum design for compact storage.
• The handguard is an aluminum M-LOK style.
• The rifle uses a 1-in-7″ rate of twist.
• The muzzle device is a flash hider.
• The overall length is 29.75 inches.
• The package includes 1 x 30-round removable magazine.
• The UPC is 798681699681.

The MCX Spear-LT SBR combines a compact footprint with modern modular features such as an M-LOK handguard and folding stock to support efficient handling on the range. The 1-in-7″ twist and 11.5-inch barrel are consistent with commonly used 5.56 NATO loadings, and the included 30-round magazine provides extended shooting between reloads. Its anodized Flat Dark Earth finish resists wear while maintaining a low profile. This configuration is aimed at informed shooters who prioritize reliability, modularity, and compact handling in training and sporting contexts.

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